[英]Moqing EF throws exception
I am trying to write a unit test but encountered a strange problem 我正在尝试编写单元测试,但遇到了一个奇怪的问题
[TestMethod]
public void Delete_user_save_via_context()
{
var data = new List<admins>
{
new admins() {id = 1, login = "test" },
}.AsQueryable();
var mockSet = new Mock<DbSet<admins>>(data);
mockSet.As<IQueryable<admins>>().Setup(x => x.Provider).Returns(data.Provider);
mockSet.As<IQueryable<admins>>().Setup(x => x.Expression).Returns(data.Expression);
mockSet.As<IQueryable<admins>>().Setup(x => x.ElementType).Returns(data.ElementType);
mockSet.As<IQueryable<admins>>().Setup(x => x.GetEnumerator()).Returns(data.GetEnumerator);
var mockContext = new Mock<Entities>();
mockContext.Setup(x => x.admins).Returns(mockSet.Object); //Here i have Exception
var userService = new UserService(mockContext.Object);
userService.Delete("test");
mockSet.Verify(m => m.Remove(It.IsAny<admins>()),Times.Once);
mockContext.Verify(m => m.SaveChanges(), Times.Once);
}
This throws exception : 这引发异常:
Castle.DynamicProxy.InvalidProxyConstructorArgumentsException: Can not instantiate proxy of class: Could not find a constructor that would match given arguments: System.Linq.EnumerableQuery`
Castle.DynamicProxy.InvalidProxyConstructorArgumentsException:无法实例化类的代理:找不到与给定参数匹配的构造函数:System.Linq.EnumerableQuery`
Can somebody help with this ? 有人可以帮忙吗?
Implementation of admin class : 实施admin类:
public partial class admins
{
public int id { get; set; }
public string login { get; set; }
}
var mockSet = new Mock<DbSet<admins>>(data);
应该:
var mockSet = new Mock<DbSet<admins>>();
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